Journal of Chemistry / 2013 / Article / Tab 1

Research Article

Development and Validation of a Method for the Quantification of an Alkaloid Fraction of Himatanthus lancifolius (Muell. Arg.) Woodson by Ultraviolet Spectroscopy

Table 1

Data of repeatability, intermediate precision, and accuracy of the developed UV spectrophotometric method for determination of total alkaloids in aqueous extract of H. lancifolius.

AssayCalculated concentration ( g/mL) ( g/mL)SDRSD (%) (%)

Repeatability16315.6980.0300.1998.00
20319.8640.1810.9099.32
28327.7240.3921.4199.01

Intermediary precision
day 1
16316.4480.2051.25102.80
20320.5800.2571.25102.90
28328.3730.2450.86101.33

Intermediary precision
day 2
16316.2130.3392.09101.33
20320.3450.0540.27101.72
28328.3910.2710.96101.39

= averaged concentration from determinations; SD = standard deviation; RSD (%) = relative standard deviation; (%) = accuracy.

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